how were those two stints at the pentagon how did they help you to prepare to lead the organization? >> that's a good question. i'm going to begin the answer to that this way -- i left the pentagon at the end of 2012 and went back to the private sector. actually thought i was done in public service at that point. but probably the thing that i missed most about public service in the department of defense was, frankly, the character of the military personnel that i work with day to day, whether it's a member of the joint staff, a member of the joint chiefs, or a senior enlisted. and so i really miss those men and women in uniform. and when the president offered me the opportunity to come back to national security to be the secretary of homeland security i said yes in part because simply i missed the people. i enjoyed working day to day with the military with our